(. 


0. 


EDGE  MOOR  IRON  CO., 


MANUFACTURERS  OF 


EDGE  MOOR  IMPROVED  GALLOWAY  BOILERS, 

EDGE  MOOR  INTERNALLY  FIRED  RETURN 
TUBULAR  BOILERS, 

EDGE  MOOR  WATER-TUBE  BOILERS* 


1905 


The  Traty  Engineering  Co., 

1647  Page  St.,  near  Ashbury, 

SAN  FRANCISCO,  CAL. 


CONTENTS. 


PAGE 

STATEMENT 4 

INTRODUCTORY  REMARKS 5 

EDGE  MOOR  IRON  COMPANY'S  PLANT 6-7 

PRODUCTS   8 

SHOPS  AND  SHOP  TOOLS 9-17 

EDGE  MOOR  WATER  TUBE  BOILER     18-53 

CHARACTERISTICS 21-23 

DESCRIPTION 25-35 

DIFFERENT  TYPES     "36-37 

DIFFERENT  PASSES  OF  GASES 38-41 

DETAILS  OF  CONSTRUCTION .  42-51 

EDGE  MOOR  SUPERHEATING  WATER  TUBE  BOILER 54-65 

SHOP  PRACTICE 66-67 

GENERAL  SPECIFICATIONS  FOR  BOILER  STEEL 68-69 

NOMINAL  HORSE  POWER  FOR  WIDTH  OF  FIRE  Box 70-71 

VIEWS  OF  PLANTS  WHICH  USE  EDGE  MOOR  BOILERS 72-89 

PARTIAL  LIST  OF  USERS  OF  EDGE  MOOR  WATER  TUBE  BOILERS  -91-92-93 


STATEMENT. 


'T'HE    Edge    Moot    Iron    Company    was    incorporated  by 
special    act   under   the  laws   of   Delaware,   January  20, 
JS69,  at  which   time  a   bridge    and   structural   iron   business 
was  conducted* 


In  J878  the  Company  commenced  the  manufacture  of 

GALLOWAY  BOILERS. 
In  J894  the  manufacture  of 

INTERNALLY  FIRED  RETURN  TUBULAR 
BOILERS* 

In  J895  the  manufacture  of 

WATER-TUBE  BOILERS. 


INTRODUCTORY  REMARKS. 


We  present  in  this  book  our  Water  Tube  Boiler  which 
is  our  principal  product.  It  is  made  in  three  styles,  Standard, 
with  Superheating  outlets,  and  with  Superheaters,  all  as  fully 
illustrated  and  described  in  the  succeeding  pages.  It  is  shown 
with  a  variety  of  settings. 

We  offer  our  services  and  experience  to  assist  you  in 
your  selection,  and  believe  that  we  can  advise  without  bias 
and  to  your  best  interest. 

Respectfully, 

EDGE  MOOR  IRON  COMPANY. 


EDGE  MOOR  IRON  COMPANY'S 
PLANT. 


^T^HE  Works   and  Main  Office  of   the  Company  are  situ- 
ated at  Edge  Moor,  Delaware,  on  the  Delaware  River. 
The  works  are  reached  via  the  Maryland  Division  of  the 
Pennsylvania  R*  R.,  Edge  Moor  Station* 


FREIGHT. 

Connections   for   freight    are    made  by   The   River   Front 

R.  R. 

to  Pennsylvania  Railroad, 

to  Philadelphia  &  Reading  Railroad, 
to  Baltimore  &  Ohio  Railroad* 


ADDRESS. 

Post-Off  ice:  Wilmington,  Delaware. 

Telegraph:   Western  Union  Telegraph  Company, 

Postal  Cable  and  Telegraph  Company, 

Cable  Address:  EDGE  MOOR* 

Lieber  and  ABC  codes  used. 
Telephone:  Delaware  and  Atlantic  long  distance  'Phone: 

Call  838  A  Wilmington. 


PRODUCTS. 


WE  ARE  EQUIPPED  TO  MANUFACTURE 

BOILERS 

AND 

PRESSED  STEEL  FORCINGS 

FOR 

CAR  TRUCKS, 
BUCKLE  PLATES  FOR  BRIDGES  AND  BUILDINGS, 

EITHER  SINGLE  OR  IN  MULTIPLES. 

BOWLS  FOR  CENTRIFUGAL  MACHINES, 

GENERAL  FORGING  WORK, 
TANK  AND  OTHER  PLATE  WORK. 


Estimates  on  any  of  the  above  work  furnished  on  application. 


INTERIOR  VIEW  OF  MACHINE  SHOP. 


INTERIOR  VIEW  OF  ASSEMBLING  SHOP. 
10 


INTERIOR  VIEW  OF  MACHINE  SHOP. 
IT 


WATER-TUBE  BOILER  HEADER, 
READY  FOR  TESTING. 

Showing  tube-holes  covered,  and  drum-holes  stopped,  ready  for  applying  hydraulic 
pressure  test. 


BBr 

J50-TON  RIVETER. 

The  drum  in  foreground  is  assembled  for  drilling  butt  straps  in  place  by  air  drill. 
The  drum  in  vertical  position  shows  method  of  tacking  with  rivets  to  draw  up  the 
work  to  position* 

13 


STEAM  FORGING  HAMMER, 

Under  this  hammer  all  die  forgings  are  manufactured, 

14 


INTERIOR  VIEW  OF  FORGING  AND  RIVETING  SHOP. 

15 


ELECTRICALLY  DRIVEN   J4-SPINDLE  DRILL  WITH  SPACING  TABLE. 

Designed  especially  to  bore  tube-holes  and  face  hand-holes  in  the  header 
plates  of  the  Edge  Moor  Water-Tube  Boilers. 

16 


48//-PUNCH  WITH  SPACING  TABLE. 

Designed  especially  to  punch  tube-holes  in  Galloway  Tube  Plates,  and  tube    and 
hand-holes  in  the  header  plates  of   our  Water-Tube  Boiler* 

2  17 


FIRST  EDGE  MOOR  WATER-TUBE  BOILER, 
Tried  in  our  shops  and  proved  highly  satisfactory  in  J895. 

This  boiler  is  still  in  active  service,  and  demonstrates  that  our  boilers  were  designed 
on  sound  principles,  and  only  improvements  in  details  were  necessary  to  make  them  what 
they  are  to-day. 


Front  Elevation  Three-Drum  Boiler. 

EDGE  MOOR  WATER-TUBE  BOILER. 

Improved  tinder  Patent,  Aug«  24,  J897. 

There  are  many  water-tube  boilers  on  the  market;  their 
merits  commend  them  to  their  patrons;  their  faults  commend 
them  to  their  competitors,  whose  industry  is  such  that  these 
faults  receive  a  public  cultivation  that  often  endangers  the 
actual  merit  the  boiler  may  possess.  We  believe  this  boiler 
contains  all  the  meritorious  features,  and,  at  the  same  time, 
eliminates  many  of  the  defects  of  this  type.  It  also  presents 
several  novel  features,to  which  we  desire  to  call  your  attention. 


o 


I 


2o 


CHARACTERISTICS. 


The  features  of  this  boiler  can  be  readily  seen  from  the 
illustrations. 

The  boiler  is  constructed  in  four  sections,  consisting  of 
drums,  front  and  back  headers,  and  the  tubes.  The  drums 
and  headers  are  constructed  entirely  of  flanged  steel.  The 
drums  enter  the  headers  at  their  full  area,  to  which  they  are 
connected  by  flanges,  avoiding  the  necessity  of  cutting  the 
drums  to  make  a  connection  for  the  headers,  and  creating  a 
solid  steam  and  water  connection  between  all  drums  without 
the  use  of  outside  connections. 

The  headers  are  domed  opposite  each  drum,  thus  avoiding 
large  flat  surfaces.  The  tubes  are  expanded  into  the  inner 
side  of  the  lower  part  of  the  headers,  and  opposite  each  tube 
in  the  outer  plate  of  the  header  there  is  a  flanged  oval  hole, 
faced  and  fitted  like  an  ordinary  manhole,  with  oval  cover  and 
dog.  The  cover,  being  on  the  inside  of  the  header,  is 
tightened  in  position  by  the  boiler  pressure,  and  each  cover 
is  independently  removable.  The  headers  are  constructed 
with  a  bend  between  the  drums  and  the  tubes,  forming  an 
angle  to  allow  of  sufficient  inclination  of  the  tubes  to  insure 
a  positive  and  rapid  circulation. 

By  means  of  the  construction  of  the  headers,  and  their 
connections  to  the  drums,  unusually  large  water-areas  are 
obtained  for  circulation,  which  reduces  to  a  minimum  the 
usual  contraction  of  circulation  through  these  parts,  and 
avoids  the  unsteady  water-level  under  forced  firing  so  gen- 
erally experienced. 

21 


FHEPUf  CHASER  3  NAME 


FRONT  ELEVATION,  EDGE  MOOR  WATER-TUBE  BOILER, 

J895. 


22 


EDGE    MOOR   WATER-TUBE    BOILER.  23 

The  arrangement  of  the  drums  permits  a  large  liberating 
surface  and  storage  capacity,  as  well  as  forming  a  solid  water- 
heating  surface  over  the  tubes,  preventing  loss  by  radiation, 
which  cannot  be  avoided  where  large  spaces  are  necessary 
between  the  drums. 

In  general,  while  possessing  to  the  fullest  extent  the  best 
elements  of  water-tube  types  of  boilers,  it  has  the  maximum 
areas  for  circulation ;  the  gases  are  carried  in  close  contact 
with  all  the  effective  heating  surface,  and  even  in  boilers  of 
the  larger  sizes,  when  two  or  more  drums  are  used,  they  are 
so  connected  by  the  front  and  back  headers  that  the  circula- 
tion is  as  free  as  in  boilers  having  a  single  drum,  thereby 
insuring  a  steady  water-line,  unimpeded  circulation,  effective 
heating  surface,  dry  steam,  quick  response  to  unusual 
demands,  and  simplicity  of  construction  with  perfect  accessi- 
bility to  all  parts. 


iBpyffiHASEflS  NAMS 


FRONT  ELEVATION,  EDGE  MOOR  WATER-TUBE  BOILER. 

J896. 


24 


DESCRIPTION  OF  EDGE  MOOR  WATER- 
TUBE  BOILER. 


Our  Water-Tube  Boiler  is  on  the  market  to  meet  the 
demand  for  a  high-grade  article,  and  is  especially  recom- 
mended for  : 

Safety,  Reliability,  Capacity  in  Space  Occupied,  Effi- 
ciency, Economy,  Durability,  Accessibility  for  Repairs 
and  Inspection,  Adaptability  to  Environments  and 
Attachments. 

These  qualities  are  not  only  desirable,  but  necessary,  in 
order  to  avoid  constant  annoyance  and  failure  in  a  steam- 
power  plant. 

Our  Boilers  are  designed  and  built  to  meet  the  varied 
conditions  of  Draft,  Fuel,  Space,  Transportation,  Furnaces, 
and  Pressure;  in  sizes  from  75  to  1000  nominal  Horse-power; 
for  working  pressures  up  to  200  pounds. 

The  Areas  of  the  path  of  circulation  for  the  water  are 
larger  than  in  any  other  of  the  horizontal  types  of  water-tube 
boilers,  which  allows  our  boilers  to  be  readily  forced  to  the 
utmost  capacity  of  the  furnaces,  and  makes  them  quick 
steamers  under  all  kinds  of  firing. 

The  Large  Water-Surface  maintains  an  even  water-level, 
while  the  large  cubical  contents  of  water,  together  with  the 
equally  large  steam-space,  afford  abundant  reservoirs  for 

stored  power. 

25 


FrlS  PUHOH/\3lfB  MAMS 


FRONT  ELEVATION,  EDGE  MOOR  WATER-TUBE  BOILER, 

1897. 

26 


EDGE    MOOR    WATER-TUBE    BOILER.  27 

The  Passes  of  Gases  among  tubes  and  around  drums 
can  be  arranged  either  horizontally,  in  the  direction  of,  or 
vertically  across  the  tubes,  as  circumstances  may  recommend,, 
and  the  gases  may  pass  off  to  the  flue,  overhead  or  under- 
ground as  best  suited  to  local  requirements. 

The  Water-Line  is  carried  at  the  centre  line  of  the  drums ; 
the  feed-water  is  distributed  in  rear  header  below  the  water- 
line  ;  the  blow-off  is  at  the  bottom  of  the  rear  header  ;  the 
steam  outlet  and  pop-valves  are  placed  upon  a  steam-yoke 
on  the  front  header  or  on  the  rear  header,  as  may  be  most 
convenient. 

The  Boiler  is  Supported  upon  columns  at  the  front  and 
upon  expansion  rollers  at  the  rear ;  is  set  between  brick  walls 
and  covered  on  top  with  non-conducting  materials.  The 
arrangements  of  chamber  and  supports  can  be  adapted  to  any 
style  of  mechanical  stokers  or  shaking  grate. 

The  Boiler,  set  as  above  described,  is  free  to  expand  and 
contract  without  touching  the  brick-work  of  the  setting.  At 
the  front  and  rear  the  small  space  between  the  headers  and 
the  brick-work  is  packed  with  asbestos  to  prevent  the  leaking 
of  air  into  the  boiler-chamber,  but  which  allows  of  the  expan- 
sion of  the  metal-work  without  detriment  to  the  boiler  or  the 
setting. 

It  pays  to  keep  a  boiler  clean,  for  soot  and  scale  are  "  non- 
conductors "  of  heat.  We  therefore  have  spared  nothing  to 
provide  means  to  this  end,  which  insures  the  maintenance  of 
economy  and  capacity. 

The  Arrangement  of  the  Boiler  is  such  that  its  contents 
are  subdivided,  thus  providing  the  principal  feature  for  safety 
embodied  in  sectional  boilers. 

The  flat  surfaces  are  particularly  well  stayed. 

No  stayed  surfaces  nor  riveted  seams  are  exposed  to  the 
intense  heat  of  the  direct  fire  from  the  furnace. 


FRONT  ELEVATION,  EDGE  MOOR  WATER-TUBE  BOILER, 

J898. 

28 


EDGE    MOOR    WATER-TUBE    BOILER.  29 

The  inclination  of  the  tubes  is  one  inch  per  foot,  and  is 
such  as  to  produce  rapid  circulation  toward  the  front  header. 
The  mixture  of  steam  and  water  is  delivered  by  the  tubes  to 
the  liberating  surface  in  the  headers  and  drums. 

Our  Boilers  may  be  kept  clean  (externally,  while  under 
fire). 

The  Details  of  Construction  that  make  the  foregoing 
statement  possible  are  as  follows  : 

All  Plates  Used  in  the  Construction  of  this  boiler  are 
made  of  open-hearth  flange  steel,  which  is  purchased  and 
tested  under  the  Edge  Moor  Standard  Specification,  copy  of 
which  appears  elsewhere  in  this  publication.  All  other 
materials  are  of  the  best  obtainable. 

The  Headers  are  of  flange  quality,  open-hearth  steel 
plates,  forged  hot  to  shape  between  dies.  Each  header  is 
composed  of  eight  plates :  top  and  bottom  trough,  two  side 
troughs,  flange  plate,  bulge  plate,  hand-hole  plate,  and  tube 
plate.  The  headers  are  assembled  from  these  plates,  which 
are  tacked  together  at  their  corners  by  bolts,  and  all  rivet- 
holes  are  then  drilled  through  these  plates  while  in  place. 
They  are  afterward  taken  apart  and  scraped  free  of  all  burrs 
and  borings  before  reassembling  for  riveting.  These  plates 
are  tapped  for  the  stay-bolts  after  they  have  been  finally 
assembled  and  riveted. 

The  Drums  are  made  of  flange  quality,  open-hearth  steel, 
drilled  to  templates,  rolled  into  cylinders,  and  riveted  together 
with  steel  rivets. 

The  Drums  are  single-riveted  circumferentially  and  double 
zigzag  riveted  in  longitudinal  seams  for  standard  pressure. 
High-pressure  boilers  have  the  longitudinal  seams  of  the 
drums  double  butt  strapped.  The  edges  of  the  plates  are 
planed  to  a  bevel  for  caulking,  and  all  seams  are  made  tight 
by  fullering  both  inside  and  out. 


lS  PUHGHASZaS  MAM£ 


;- 


FRONT   ELEVATION,  EDGE  MOOR  WATER-TUBE  BOILER. 

J900. 


EDGE    MOOR   WATER-TUBE    BOILER.  31 

"The  U  Plates"  are  flange  quality,  open-hearth  steel, 
forged  hot  to  shape  between  dies. 

The  Riveting  of  the  plates  together,  and  of  the  U  plates 
to  the  end  sheets  of  the  drums,  is  done  by  hydraulic  riveters, 
each  rivet  being  held  until  black. 

The  Tube  Plates  are  bored  for  the  tubes. 

The  Hand-Hole  Plates  have  flanged  oval  hand-holes, 
forged  opposite  to  each  tube.  These  are  forged  hot  between 
dies  and  afterward  faced  to  provide  a  seat  for  the  hand-hole 
covers. 

The  Bulge  Plates  are  forged  into  domes  opposite  to  each 
drum,  so  as  to  avoid  large  flat  surfaces. 

The  Flange  Plates  have  flanged  openings,  formed  by 
dies  while  hot,  to  receive  the  drums  to  which  they  are 
riveted. 

The  Troughs  are  forged  hot,  and  scarfed  to  fit  over  the 
ends  of  the  top  and  bottom  troughs.  These  troughs  are 
riveted  together  at  the  corners,  and  form  a  frame  to  which  the 
plates  above  described  are  riveted  to  form  the  boxes  of  the 
front  and  rear  headers,  the  edges  of  the  plates  being  planed 
to  a  bevel  and  fullered. 

The  Headers  are  braced  by  eight  (8)  2*^"  stay-bolts  in 
each  bulge,  placed  on  such  a  bolt-circle  that  the  surfaces 
supported  interior  and  exterior  thereto  will  be  in  equi- 
librium. 

These  stays  pass  through  cone-holes  in  the  bulge  plates 
and  are  provided  with  full  hex-nut  on  the  outer  end  of  the 
bolt,  and  an  annealed  copper  cone-nut  just  inside  of  the  plate, 
which  is  drawn  tightly  into  the  coned  hole  and  against  the 
threads  of  the  stays,  thus  making  a  perfect  joint.  These  stays 
pass  through  the  U  plates,  which  are  riveted  to  the  drums,  and 
are  anchored  to  same  by  full  hex-nut  on  the  rear  end. 

The  Headers  are  also  stayed  by  screwed  stays,  which  are 


FRONT  ELEVATION,  EDGE  MOOR  WATER-TUBE  BOILER. 

J90U 

32 


EDGE    MOOR   WATER-TUBE    BOILER.  33 

riveted  over  at  both  ends.     These  are  placed  among  the  tubes 
and  around  the  drums. 

The  wrought  and  cast  Trimmings  for  the  Boiler-Settings 
have  good  architectural  style  without  sacrificing  any 
mechanical  feature. 

A  sliding  hearth-plate  is  provided,  which  greatly  facilitates 
cleaning  of  fires.  When  the  hearth-plate  is  pulled  forward, 
an  opening  is  made  through  which  the  clinker  will  drop  into 
the  ash-pit,  instead  of  out  upon  the  floor  around  the  fireman's 
feet. 

Cleaning  doors  and  manhole  doors  and  the  necessary 
cleaning-out  doors  for  the  flues  and  tubes  are  provided  in 
accordance  with  the  requirements  of  the  style  of  setting  de- 
manded by  the  situation. 

We  also  furnish  corner  braces,  tube  doors,  buckstays, 
furnace  fixtures,  such  as  grate-bars  and  bearers,  deflector  cast- 
ings and  damper,  firing  tools,  wrenches,  special  tile,  etc.,  as 
may  be  required. 

Upon  the  Question  of  Adaptability  there  is  much  to 
be  said  in  favor  of  our  boiler.  We  are  prepared  to  build  them 
from  6  tubes  wide  to  30  tubes  wide,  with  from  one  drum  to 
five  drums  in  these  widths  ;  and  from  6  to  16  tubes  in  height, 
as  the  capacity  may  require,  with  the  tubes  18  feet  long  or 
shorter.  We  are  thus  enabled  to  put  the  maximum  amount 
of  power  in  any  given  space. 

It  is  also  a  Noteworthy  Pact  that  our  boiler  can  be 
supplied  with  superheaters ;  that  the  steam  outlets  may  be 
placed  at  the  front  or  rear,  and  likewise  the  feed  inlet  may  be 
at  either  end  of  the  boiler. 

By  reason  of  the  box  form  of  headers,  our  boilers  are 
easily  swung  or  supported  on  the  corners,  so  that  all  sorts  of 
stokers,  furnaces,  or  shaking  grates  may  be  applied  ;  and  as  we 
may  select  any  one  of  the  four  different  passes  of  gases,  it  is 


FRONT  ELEVATION,  EDGE  MOOR  WATER-TUBE  BOILER. 
Three  drum  boiler. 

34 


EDGE    MOOR   WATER-TUBE    BOILER. 


35 


possible  to  set  our  boiler  in  continuous  batteries  as  well  as  in 
pairs  and  singly. 

The  tubes  are  withdrawn  through  the  front  header  and 
require  about  their  length  of  space  in  front  of  the  boiler  for 
this  purpose. 

In  the  foregoing  we  have  touched  upon  those  things  which 
control  especially  the  first  five  essential  features  mentioned  at 
the  beginning. 


REAR  ELEVATION,  EDGE  MOOR  WATER-TUBE  BOILER. 
Three  drum  boiler. 


ONE  DRUM  WATER-TUBE  BOILER, 

From  75  H.  P. 
To    250  H.  P. 


TWO  DRUM  WATER-TUBE  BOILER, 

From  200  H.  P. 
To      400  H.  P. 


THREE  DRUM  WATER-TUBE 
BOILER. 

From  300  H.  P. 
To      600  H.  P. 


FOUR  DRUM  WATER-TUBE 
BOILER, 

From  500  H.  P. 
To      800  H.  P. 


FIVE  DRUM  WATER- 
TUBE  BOILER. 

From  700  H.  P. 
To     JOOO  H.  P. 


THREE  DRUM  BOILER. 

"With  one  tube-door   lifted  off  so  that  the 

others  may  be  slid  to  one  side* 

Rear  view. 


37 


CROSS-PASS  SETTING. 
Gases  off  at  the  bottom. 


CROSS-PASS  SETTING. 
Gases  off  at  the  top. 

33 


HORIZONTAL-PASS  SETTING. 
Gases  off  at  the  top. 


HORIZONTAL-PASS  SETTING. 
Gases  off  at  the  bottom. 

39 


SUPERHEATING  BOILER,  CROSS  PASS  SETTING. 
Gases  off  at  top  rear. 


SUPERHEATING  BOILER,  CROSS  PASS  SETTING. 
Gases  off  at  top  front. 


40 


CROSS  SECTION, 

Showing  Horizontal-Pass, 

Tube  Tile,  and 
Rafter  Type  of  Roof. 


CROSS  SECTION. 

Showing  Cross-Pass, 

Deflector  Castings, 

and  Side  Cleaning  Doors. 

Upper  half  of  Drums  covered. 


CROSS  SECTION. 

Showing  Buckle  Plate  Roof, 

Drums  exposed  to  products 

of  combustion. 


FRONT  SUPPORT  BETWEEN  TWO  BOILERS. 

|JMr 


FRONT  HEADER  SUPPORT-COLUMNS, 
Furnished  unless  boiler  hangs  from  framing. 

42 


ROLLER  BEARING  DETAIL. 


REAR  HEADER  SUPPORT-ROLLERS 
AND  SAFETY  PIERS. 


43 


SECTION  THROUGH  FURNACE  FRONT, 
Showing  Sliding  Hearth  Plate  and  Ash  Slide. 


44 


METHOD  OF  CLEANING  OFF  SOOT  FROM  TUBES  WITH 

HORIZONTAL  PASS  SETTING, 

Boilers  set  in  continuous  battery. 


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©  O  ©  ©  O  O  O 

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O  O  O  O  O  O  O 

0  .Q'fcP  Q  Q  Q  Q 
O' 'O "O  O  6  Q  O~ 

0  6  O  O  O  O  O 
I)  0  ©  6  O  6  & 

O  O  O  O  O  6 
0  6  O  O  O  ©  « 


METHOD  OF  CLEANING  OFF  SOOT  FROM  TUBES, 
WITH  CROSS  PASS  SETTING, 

Boilers  set  singly  or  in  pairs. 


45 


INTERIOR  VIEW  OF  STANDARD  DRUM. 

Shown  in  section,  pages  50-51. 
Showing  seams  at  the  bottom,  and  U  plate  at  each  end. 

46 


f  •IIMttttll 


FRONT  HEADER. 

Showing  the  forged  plates  forming  the  header  and  the  manner  of  riveting. 
This  illustration  shows  trunnions  riveted  to  the  side  of  header  for  overhead 
suspension,  the  eight  stay  bolt  holes  on  each  bulged  surface  for  the  header 
stays  (illustrated  pages  50-5 \],  and  hollow  stay  bolts  between  each  flanged 
hand  hole  on  the  face  of  the  boiler. 


47 


DETAIL  OF  HEADER  CONSTRUCTION. 

Opposite  each  of  the  4/x  tubes  (which  are  expanded  into  the  tube  plates) 
is  an  oval  flanged  hand-hole,  which  is  faced  to  afford  a  seat  for  the  oval 
hand-hole  cover* 

The  covers  and  dogs  are  the  only  cast-iron  used  in  the  pressure  part 
of  our  Water-Tube  Boiler.  These  are  under  compression*  for  which  cast- 
iron  is  particularly  adapted.  The  plates  of  the  header  are  fastened  together 
by  screwed  stays  riveted  over.  The  tubes  are  expanded  and  their  ends 
flared  by  a  special  roller  expander. 


48 


EXTERIOR  VIEW  OF  HAND-HOLE  PLATE  OF  HEADER, 

Showing  solid  stays,  and  illustrating  that  each  hand-hole 
cover  is  independently  removable. 


49 


ISOMETRICAL  SECTIONAL  VIEW  OF  REAR  HEADER  AND 
CONNECTION  TO  DRUMS. 

Showing  bulge  stays  and  U  plates* 


DETAIL  OF  CONNECTION  OF  BULGE  STAY  AND 
DRUM  TO  BOILER  HEADER. 

50 


SECTION  THROUGH  FRONT  HEADER. 
Showing  relation  of  drums  to  tubes.    Drum  horizontal  tubes  inclined  one  inch  per  foot 


C/} 


ONE  AND  TWO-DRUM  WATER-TUBE  BOILERS. 

53 


P  g  | 
fc     «« 


to 


o  fc 


r 


54 


EDGE  MOOR  SUPERHEATING 
WATER-TUBE  BOILERS. 

Improved  under  patents,  Aug.  24,  i897~Aug.  20,  1901. 


A  superheater  that  is  designed  as  a  part  of  a  boiler  must 
obtain  its  heat  from  the  gases  of  combustion ;  its  location 
depends  upon  the  degree  of  superheat  required. 

If  properly  utilized,  there  is  sufficient  heat  in  the  waste 
products  of  combustion,  after  they  have  passed  through  the 
boiler-setting,  to  furnish  a  considerable  degree  of  superheat 
to  the  outgoing  steam,  and,  by  the  use  of  these  products, 
to  increase  the  efficiency  of  the  boiler  by  turning  to  ac- 
count that  which  would  otherwise  be  lost.  The  superheat- 
ing tubes  of  such  a  device  are  located  in  the  coolest 
portion  of  the  boiler-chamber,  where  there  is  no  danger 
from  overheating  and  where  there  are  no  precautions  re- 
quired for  the  preservation  of .  the  superheater,  or  extra 
care  required  to  operate  the  boiler. 

If  a  high  degree  of  superheat  is  required,  the  superheat- 
ing tubes  must  be  located  in  the  path  of  combustion  before 
they  have  completely  passed  through  the  boiler-setting, 
and  where  the  gases  have  a  high  temperature.  When 
these  high  temperatures  exist,  the  tubes  of  the  superheat- 
ers must  be  cooled  at  all  times,  either  by  the  passage 
through  them  of  the  steam  from  the  boiler,  or  by  being 
flooded  with  water,  should  it  be  necessary,  for  any  cause, 
to  shut  off  this  flow  of  steam.  The  tubes  must  be  flooded 
when  the  boiler  is  started,  before  the  junction-valve  is 

55 


r 


EDGE    MOOR    SUPERHEATING   WATER-TUBE    BOILERS.     57 

opened,  and  immediately  after  it  is  closed.  These  precau- 
tions are  necessary  to  prevent  the  tubes  from  being  burned 
out  by  the  high  temperatures  of  the  gases  to  which  they 
are  exposed,  and,  while  such  a  superheater  can  be  operated 
successfully,  it  is  always  in  danger  of  injury  or  destruction 
by  carelessness  or  want  of  intelligence  of  the  man  in  charge. 

A  British  firm  that  manufactures  both  styles  of  superheat- 
ers, the  flooding  and  non-flooding  types,  plainly  states  its 
preference  for  the  type  that  does  not  need  flooding,  and 
will  guarantee  this  type,  but  refuses  to  assume  any  re- 
sponsibility for  the  other.  We  agree  with  them  that  it  is 
better  to  avoid  the  types  of  superheaters  which  require  to 
be  flooded,  because  the  precautions  required  to  protect 
them  can  so  readily  be  neglected,  also  because  it  seems 
reasonable  that  any  superheater  that  requires  to  be  alter- 
nately flooded  with  water  and  exposed  to  high  tempera- 
ture must  have  a  series  of  deposits  baked  fast  to  its  heat- 
ing surface,  which  would  not  only  decrease  its  efficiency, 
but  is  likely  to  encroach  to  a  risky  degree  on  the  danger- 
line. 

We  also  believe  that  when  the  higher  temperatures  of 
superheat  are  desired,  the  superheater  should  not  be 
located  in  the  boiler-setting,  but  that  a  separate  furnace 
should  be  employed,  so  that  the  required  heat  may  be 
applied  to  the  tubes  after  the  steam  is  passing  through  the 
superheater,  or  that  may  be  quickly  directed  from  the 
tubes,  should  circumstances  compel  the  closing  of  the 
steam-valve. 

We  have  designed  our  superheating  outlet  and  super- 
heater so  as  to  utilize  the  heat  of  the  outgoing  gases 
from  the  boiler.  The  heat  to  which  it  is  exposed  renders 
it  unnecessary  to  flood  the  tubes  at  any  time  for  their 
protection,  nor  does  it  require  any  precautions  to  operate 


g 

I 


EDGE    MOOR   SUPERHEATING   WATER-TUBE    BOILERS.    59 

it  other  than  the  customary  care  required  to  fire  any 
ordinary  boiler.  It  will  furnish  sufficient  superheat  to 
eliminate  all  entrainment  at  the  boiler.  It  meets  the 
demand  for  dry  steam  at  the  engine,  which  is  very  dif- 
ferent from  the  commercially  dry  steam  at  the  boiler,  as 
this  contains  from  one  to  three  per  cent,  of  water  in 
entrainment,  to  which  must  be  added  what  will  be  con- 
densed in  the  steam-mains,  prior  to  its  use  at  the  engine. 

The  illustrations  which  follow  describe  our  superheater 
and  superheating  outlet  better  than  we  can  in  words, 
and  show  how  it  can  be  applied  to  boilers  of  different 
sizes,  also  to  water-tube  boilers  of  types  other  than  those 
we  manufacture.  Its  design  is  so  simple  and  it  is  so 
absolutely  free  from  strains  due  to  expansion,  that  we 
feel  confident  it  will  receive  favorable  consideration.  We 
have  designed  the  constituent  parts  of  our  superheater 
so  that  such  of  them  as  are  likely  to  need  renewing 
can  be  replaced  by  commercial  articles. 

The  sleeves  in  the  header,  through  which  the  tubes 
pass,  are  of  commercial  size;  .the  tubes  are  straight,  and, 
should  they  need  replacing,  can  be  purchased  from  any 
maker,  without  the  trouble  even  of  a  sketch  to  specify 
requirements. 

We  have  built  superheating  boilers  that  have  been 
doing  good  service  for  a  period  of  years  and  have  not 
called  for  repairs  since  their  installation,  and  we  attribute 
this  gratifying  fact  to  the  simplicity  of  its  design  and  to 
the  care  used  to  eliminate  all  elements  of  self-destruction. 
We  provide  holes  for  a  soot-blower,  so  that  the  fireman 
can  keep  the  tubes  clean  and  can  clean  them  from  soot 
even  while  the  boiler  is  in  service,  a  precaution  which 
enables  the  heating  surface  to  be  kept  clean  and  its 
efficiency  maintained. 


TWO-ROW  SUPERHEATING  WATER-TUBE  BOILER. 


FRONT  OF  BOILER. 


€>  <D 


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SECTION  THROUGH  BOILER  SETTING. 

60 


EDGE   MOOR   SUPERHEATING   WATER-TUBE    BOILERS.    61 

The  Edge  Moor  Superheater  is  so  simple  in  con- 
struction, and  is  so  located  and  provided  for  in  the 
matter  of  expansion  and  cleaning,  that  it  probably  will 
live  as  long  as  the  boiler. 

The  Edge  Moor  Superheating  Steam  Outlet  for  Water- 
Tube  Boilers  will  superheat  from  10  degrees  to  20  degrees. 

The  Edge  Moor  Superheating  Water-Tube  Boiler  can 
have  its  heating  surface  varied  to  suit  the  requirements  of 
the  demand  for  superheated  steam. 


*    * 


REAR  HEADER  SUPERHEATING  BOILER, 


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NINE-TUBE  SUPERHEATING  STEAM  OUTLET. 


FRONT  OF  BOILER. 


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SECTION  THROUGH  BOILER  SETTING. 

63 


64 


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65 


SHOP  PRACTICE. 


The  ability  of  a  boiler-shop  to  turn  out  first-class  work 
depends  upon  the  quality  of  material,  the  methods  and 
care  used  in  construction,  and  the  tools  and  workmen  by 
which  it  is  constructed. 

Our  shops  are  well  equipped  with  machinery  adapted 
to  our  business.  Many  of  our  tools  are  built  especially 
for  the  manufacture  of  our  boilers,  and  we  employ  skilled 
workmen. 

Our   methods    of  work    are   as    follows : 

All  holes  are  punched  smaller  than  the  diameter  of 
the  rivet  to  be  driven,  than  the  diameter  of  the  boiler- 
tube  to  be  used,  or  the  size  of  hole  to  be  flanged ;  these 
holes  are  then  drilled,  bored,  or  forged  to  the  size  re- 
quired by  the  construction.  The  holes  for  the  tubes  and 
hand-hole  plates  are  punched  and  bored  by  machines  with 
spacing  tables,  thus  insuring  accurate  spacing  from  centre 
to  centre  of  tubes. 

Holes  for  rivets  in  headers  are  drilled  while  plates  are 
"  tacked "  together  by  bolts,  the  drills  being  guided  by 
small  punched  holes  in  the  upper  plate  only.  Plates  are 
taken  apart  after  drilling,  scraped  free  of  all  burrs  and 
chips,  and  reassembled  for  riveting. 

Shells  are  rolled  into  cylinders  and  assembled  for  rivet- 
ing, and  the  plates  and  butt  straps  are  punched  l/^ff 

scant,   and    drilled   in    place   -fa"    larger   than    the    rivet. 

66 


SHOP    PRACTICE.  67 

The  foregoing  construction  insures  true  holes,  as  the 
smaller  hole  in  the  upper  plate  acts  as  a  template  for  the 
lower  plate,  and  the  holes  in  both  plates  must  match 
with  absolute  accuracy,  thus  avoiding  all  necessity  for 
the  use  of  a  drift-pin,  which  so  often  produces  injurious 
strains  that  materialize  only  after  the  boiler  has  been 
placed  in  service. 

Stay-bolt  rods  are  straightened  before  threading,  and 
after  being  threaded  are  sawed  to  required  lengths. 

Caulking  edges  of  plates  are  beveled  after  the  rivet-holes 
in  the  plates  are  drilled,  so  that  the  lap  from  the  centre  of 
the  rivet  to  the  edge  of  the  beveled  plate  is  proportioned 
for  the  most  effective  caulking. 

All  rivets  are  power-driven,  either  by  an  hydraulic 
riveter  or  by  a  pneumatic  hammer.  Rivets  are  soft  steel, 
driven  hot,  and  finished  black. 

Forgings  for  boilers  are  made  at  a  cherry  heat,  under 
steam  hammers,  special  care  being  exercised  in  finishing 
them  true  to  size  during  the  shrinkage  period. 

After  forging,  shrinkage  forms  are  used  in  the  flanged 
openings,  to  prevent  distortion  while  cooling. 

All    seams    are    fullered    by    pneumatic    tools    until    tight. 

All  boilers  and  boiler  headers  are  tested  to  the  re- 
quired hydraulic  pressure  before  leaving  the  shop.  The 
exterior  parts  of  all  boilers  are  oiled  before  shipment. 

All    small    and    delicate   parts    are   boxed. 


EDGE  MOOR  IRON  COMPANY. 
GENERAL  SPECIFICATIONS  FOR  BOILER  STEEL. 


All  plates  used  in  the  construction  of  the  boilers  must 
be  made  from  homogeneous  open-hearth  steel,  stamped  show- 
ing brand  of  steel  and  name  of  makers ;  must  be  free  from 
flaws  and  cracks,  and  must  have  a  workmanlike  finish. 

All  plates  must  have  an  ultimate  tensile  strength  of  not 
more  than  63,000  nor  less  than  55,000  pounds  per  square 
inch ;  an  elastic  limit  of  not  less  than  30,000  pounds  per 
square  inch,  an  elongation  of  not  less  than  25  per  cent, 
in  a  length  of  8",  with  a  reduction  of  area  of  not  less  tha'n 
50  per  cent. 

The  strips  cut  from  the  plates  for  testing  purposes  must 
be  stamped  on  the  shearing-lines  in  two  places  on  each 
strip,  thus  :  — ©— ;  also  number  the  test-strip  the  same  as  the 
plate  from  which  it  is  cut,  this  numbering,  both  for  strip 
and  plate,  to  be  stamped  and  also  painted  with  white  paint 
to  facilitate  the  identification  of  the  test-piece  with  the  plate. 
The  test-piece  to  be  2}/2 "  wide  and  i6"'in  length,  and  the 
stamp  to  be  within  3"  of  the  end  of  the  plate. 

Specimens  must  stand  the  following  bending  test :  When 
cut  lengthwise  from  the  plate,  will  bend  cold  180  degrees 
over  a  diameter  of  two  thicknesses  of  the  plate  without 
sign  of  fracture,  and  when  cut  crosswise  of  the  plate  will 
bend  cold  90  degrees  over  a  diameter  equal  to  five  thick- 
nesses of  the  plate  without  sign  of  fracture. 

68 


SPECIFICATIONS    FOR    MATERIAL.  69 

Quenching  bend  test :  The  test-pieces  after  having  been 
heated  red  hot  and  quenched  in  water  at  60°  Fahr.,  must  bend 
cold  without  crack  or  flaw  to  a  curve  having  a  radius  equal 
to  one-half  its  thickness.  It  is  conditioned  that  every  plate 
shall  be  so  marked  as  to  afford  easy  identification.  It  is  not 
necessary  to  stamp  the  sheets  with  the  grade  and  guaran- 
teed ultimate,  as  the  physical  properties  of  the  steel  are  cov- 
ered by  the  certifications  of  tension-tests  furnished  by  in- 
dependent inspectors.  It  is  provided,  however,  that  each  plate 
shall  be  plainly  marked  in  white  lead  with  its  size  and 
commercial  order-number  —  that  is,  our  order  to  the  mill, 
and  in  addition  it  shall  be  stamped  with  its  heat  —  or  blow- 
number,  and  a  white-lead  circle  drawn  around  such  stamp 
in  order  to  locate  it  easily.  As  many  of  the  plates  have 
large  circles  cut  out  of  the  centre,  all  marking  and  stamp- 
ing must  be  done  in  the  corners  within  three  inches  of  either 
edge,  except  in  the  case  of  the  tys"  plates,  which  we  desire 
marked  and  stamped  in  the  middle  because  in  these  plates 
the  centre  is  left  intact  and  the  corners  are  cut  off.  In  each 
parcel  of  plates  of  any  considerable  number,  not  less  than 
ten  to  twelve  tests  shall  be  made,  and  must  cover  a  mini- 
mum of  three  tension-tests  for  each  heat  or  blow. 


PIERS 


SUPPORTING    PIERS. 


70 


TABLE 

Giving  range  of  nominal  Horse-Power  for  different  widths  of 
furnace  chamber* 

A.  HORSE-POWER. 

3X  9/x 70  to  1 50 

4'  5X/ 8o  to  175 

5X  ^/x    90  to  200 

5'  gxx   ioo  to  230 

6X  4" 1 10  to  275 

6X  1 1  X/x 125  to  300 

7/*7X// 150  to  325 

8X  3" 175  to  350 

8X  ioXx/ 20°  to  4°° 

9X  6X/X 215  to  415 

io/  2/x 230  to  450 

iox  9^x/ 289  to  5°° 

i  ix  5X/X 3°9  to  600 

i2x  ix/ 3J5  to  625 

i2x  9X/ 325  to  650 

I3X  4^" 350  to  700 

i4r  ox/   375  to  750 

14'  8X/ 385  to  800 

i5x  3K/X • 400  to  825 

1 5X  1 1  X/x 415  to  875 

i6x  7XX 42510900 

B  varies  from  5X  to  7X,  as  required  by  the  nature  of  the  coal  and 
capacity  desired. 

Height  of  boiler  setting  ranges  from  iix  ioxx  to  I7X  2XX,  varying 
with  the  number  of  rows  of  tubes. 


DEERING  HARVESTING  CO. 
CHICAGO,  ILL. 


DEERING  HARVESTING  CO. 

CHICAGO,  ILL. 
"Water-Tube  Boilers. 

73 


. 


MONTROSE  PUMPING  STATION, 
ALLEGHENY,  PA. 

74 


MONTROSE  PUMPING  STATION, 
ALLEGHENY,  PA. 
"Water-Tube  Boilers. 

75 


OVERBROOK  FARMS, 
PHILADELPHIA,  FA. 

76 


OVERBROOK  FARMS, 
PHILADELPHIA,  PA. 
Water-Tube  Boilers. 

77 


EDISON  ELECTRIC  LIGHT  CO., 
SANSOM  STREET  STATION,  PHILADELPHIA,  PA. 

73 


EDISON  ELECTRIC  LIGHT  CO., 

SANSOM  STREET  STATION,  PHILADELPHIA,  PA. 

Superheating  Water-Tube  Boilers. 

79 


DREXEL  OFFICE  BUILDING, 

PHILADELPHIA,  PA. 

Independence  Hall  in  the  foreground. 

80 


DREXEL  OFFICE  BUILDING, 

PHILADELPHIA,  PA. 
81 


DIAMOND  STATE  STEEL  COMPANY, 
WILMINGTON,  DEL. 

82 


DIAMOND  STATE  STEEL  COMPANY, 

WILMINGTON,  DEL. 

Water-Tube  Boilers. 

83 


WEST  VIRGINIA  PULP  AND  PAPER  CO., 
COVINGTON,  VA. 


WEST  VIRGINIA  PULP  AND  PAPER  CO,, 
COVINGTON,  VA. 

Water-Tube  Boilers. 

85 


5! 


o 


3 


1 


86 


JESSUP  &  MOORE  PAPER  COMPANY, 
ROCKLAND  MILLS.  "WILMINGTON,  DEL. 

87 


THE  MILWAUKEE  ELECTRIC  RAILWAY  AND  LIGHT  COMPANY, 
MILWAUKEE,  WISCONSIN. 

88 


THE  MILWAUKEE  ELECTRIC  RAILWAY  AND  LIGHT  COMPANY, 

MILWAUKEE,  WISCONSIN. 

New  Power-House,  battery  of  "Water-Tube  Boilers  of  600  H.  P.  units. 

89 


The  Following  Parties  are  among  the  Users  of  the 
Boilers  of  our  Manufacture* 


NAMES.  ADDRESSES. 

Montrose  Pumping  Station .  Allegheny,  Pa. 

Yonkers  Railroad  Co Yonkers,  N.  Y. 

Richmond  Street  &  Interurban  Railway  Co Richmond,  Ind. 

Mechan  &  Sons Glasgow,  Scotland. 

Manufacturers'  Natural  Gas  Co Frankton,  Ind. 

Herron  Hill  Pumping  Station Pittsburg,  Pa. 

Chicago  Sugar  Refining  Co Chicago,  111. 

Rockford  Sugar  Refining  Co Rockford,  111. 

Chicago  Edison  Company Chicago,  111. 

United  States  Sugar  Refining  Co Waukegan,  111. 

Millbourne  Mills  Co Philadelphia,  Pa. 


New  Orleans  &  Carrollton  Railway  Co.  ......  New  Orleans,  La. 


Union  Depot  Power  Plant Columbus,  Ohio. 

Stephen  Girard  Building Philadelphia,  Pa. 


English  Hotel  &  Theatre  Co Indianapolis,  Ind. 

Hudson  Building New  York  City,  N.  Y 

Nelson  Morris  &  Co. St.  Joseph,  Mo. 

Cincinnati  Edison  Co.  .  Cincinnati,  Ohio. 


The  Milwaukee  Electric  Railway  &  Light  Co.    .    .  OneidaSt.,  Milwaukee,Wis. 
"  "  "  "          "        "        "     .    .  Commerce  St.,     ' 


"                 "              ''          "       "        "     .    .  Broadway  Plant, " 
"             "                 "              "          "        "        "     .    .  Sycamore  St., 
Germantown  Steam  Heat  Co.  .  Germantown,  Pa. 


92         LIST   OF   USERS  OF  THE   EDGE   MOOR   BOILERS. 

NAMES.  ADDRESSES. 

Hammermill  Paper  Co Erie,  Pa. 


Hamilton  Brown  Shoe  Co St.  Louis,  Mo. 

Jefferson  Medical  College  Hospital Philadelphia,  Pa. 

United  States  Glue  Co •.    .   .    .  Carrollville,  Wis. 


Armour  Packing  Co Kansas  City,  Mo. 

Girard  Estate Philadelphia,  Pa. 

International  Cement  Co Elizabeth,  Pa. 

Elmira  &  Seneca  Lake  Railway Millport,  N.  Y. 

West  Virginia  Pulp  &  Paper  Co Covington,  Virginia. 

"  "  "      "       "        " Piedmont,  West  Va. 


"        " Covington,  Va. 

NewOmaha,Thompson  Houston  Elec.  Light  Co.,  .  Omaha,  Nebraska. 

Diamond  State  Steel  Co Wilmington,  Del. 

Jessup  &  Moore  Paper  Co Wilmington,  Del. 

Edison  Electric  Light  Co.,  Sansom  St.  Station    .    .  Philadelphia,  Pa. 

Philadelphia  Electric  Co.,  Tacony  St.  Station  .    .    .  Philadelphia,  Pa. 

Paul  A.  Sorg  Paper  Co Middletown,  Ohio. 

North  American  Building Philadelphia,  Pa. 

American  Can  Co St.  Paul,  Minn. 

Deering  Harvester  Co Chicago,  111. 


A.  F.  Bornot  &  Brother Philadelphia,  Pa. 

E.  I.  DuPont  Co.,  Carney's  Point  Works Carney's  Point,  N.  J. 

"     for  Atlantic  Mfg.  Co Barksdale,  Wis. 

'     for  Repauno  Manufacturing  Co.,  Thompson's  Point,  N.  J. 

"     for  Carney's  Point Carney's  Point,  N.  J. 

Aurora,  Elgin  &  Chicago  Railway  Co Batavia,  111. 

Harrisburg  Light,  Heat  and  Power  Co Harrisburg,  Pa. 


Overbrook  Steam  Heat  Co Overbrook,  Pa. 


Wells  Building Milwaukee,  Wis. 

Gimbel  Brothers Philadelphia,  Pa. 


LIST  OF   USERS   OF  THE   EDGE   MOOR   BOILERS.        93, 

NAMES.  ADDRESSES. 

Philadelphia  &  West  Chester  Traction  Co Llanerch,  Pa. 

".....  Ridley  Creek,  Pa. 

New  York  Telephone  Building New  York  City,  N.  Y. 

Terre  Haute  &  Indianapolis  Railway  Co Terre  Haute,  Ind. 

H.  O.  Wilbur  &  Sons  . .    .  Philadelphia,  Pa. 

Sperry  Flour  Co Los  Angeles,  Cal. 

"          "        " Tacoma,  Washington. 

Pacific  Electric  Railway  Co Los  Angeles,  Cal. 

Huntington  Building Los  Angeles,  Cal. 

Great  Northern  Railway  Co West  Superior,  Wis. 

"  "  "  "      Dale  Street  Shops ..  St.  Paul,  Minn. 

City  of  Minneapolis,  North  East  Pumping  Station,  Minneapolis,  Minn. 
Penna.  Railroad,  Maryland  Div.,  Shellpot  Shops,  Wilmington,  Del. 

"  Baltimore  Tunnel Baltimore,  Md. 

Philadelphia  &  Reading  Railway  Co Philadelphia,  Pa. 

Southwark  Foundry  &  Machine  Co Philadelphia,  Pa. 

Diamond  Drill  &  Machine  Co Birdsboro,  Pa. 

Rosenfeld  Building Baltimore,  Md. 

Belvedere  Hotel Baltimore,  Md. 

Suburban  Gas  Co Chester,  Pa. 

Drexel  Building Philadelphia,  Pa. 

Betts  Machine  Co Wilmington,  Del. 

Chicago  &  Milwaukee  Electric  Railway  Co Highwood,  111. 

Electric  Company  of  America,  for  Atlantic  Electric 

Light  &  Power  Co Atlantic  City,  N.  J. 

Electric  Company  of  America,  for  Marion  Light  & 

Heating  Co Marion,  Ind. 

Electric  Company  of  America,  for  Wheeling  Elec- 
trical Co Wheeling,  West  Va. 

F.  Wesel  Manufacturing  Co - Brooklyn,  N.  Y. 

II.  W.  Butterworth  &  Sons  Co Philadelphia,  Pa. 

C.  A.  Gambrill  Manufacturing  Co Orange  Grove,  Md. 

Jos.  Bancroft  &  Sons  Co Wilmington,  Del. 

Pfister  &  Vogel  Leather  Co.,  Bay  View  Tannery.  .  Milwaukee,  Wis. 
"       "       "  "     Island  Tannery .    .    . 

Union  Electric  Light  &  Power  Co St.  Louis,  Mo. 

William  Sellers  &  Co.,  Incorporated Philadelphia,  Pa. 

Philadelphia  Grain  Elevator  Co Philadelphia,  Pa. 

East  Indian  Railway  Co Calcutta,  India. 


M289367 


THE  UNIVERSITY  OF  CALIFORNIA  LIBRARY 


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